Mark Allanson
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| posted on 25/7/04 at 08:27 PM |
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Fanbelt stupid question number 2
I know fan belts are graded by their length, they have it printed on the outer edge in millimeters.
I have never really thought where this is measured, is it the length of the outer or the inner or the mean of the driven faces?
I measured mine at its smallest possible dimension at the outer face by wrapping masking tape around the pulleys, cutting it off and measuring -
825mm. I want to get the smallest belt possible as my alt will only adjust 38mm of belt length (did the same thing on maximum dimension)
 
Rescued attachment Masking Fan Belt.jpg
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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boost
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| posted on 25/7/04 at 08:33 PM |
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the lenght is the outside measurement but you also need to know what sort of v it is eg. spz or 52b there are meny different types.
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macspeedy
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| posted on 25/7/04 at 08:56 PM |
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take the crank pulley along, we bought a halfords hb 875a which should see you right 
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Mark Allanson
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| posted on 25/7/04 at 09:02 PM |
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quote:
Originally posted by boost
the lenght is the outside measurement but you also need to know what sort of v it is eg. spz or 52b there are meny different types.
What are the differences, I may have problems if the kia alternator is different from the Ford pulleys
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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Mark Allanson
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| posted on 25/7/04 at 09:03 PM |
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quote:
Originally posted by macspeedy
take the crank pulley along, we bought a halfords hb 875a which should see you right
I would have thought that 875 would be too long by 50mm
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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SeaBass
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| posted on 26/7/04 at 09:38 AM |
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I have been having the same fun recently mark trying to drive an alternator in a different position on a zetec.
You'll find that Halfords belts are mm then a letter a-f referring to the v spec. Other manufacturers use different codes.
From my experiments I found that all belt manufacturers (Gates, Bosch, Halfords etc ) belts are different lengths at a given size by +/- 10mm anyway.
Best bet is to pick the smallest as your doing and then exchange if not correct.
Cheers
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